Technical Field
[0001] The present invention relates to a tape printing apparatus that has a cartridge attachment
portion into which a tape cartridge is attached, and a tape printing system.
Background Art
[0002] In prior art, a print label creating apparatus that has a cassette attachment portion
is known as a tape printing apparatus of this kind (see Patent Literature 1). A hollow
guiding convex portion that guides the attachment of a tape cassette is provided on
the cassette attachment portion, and an attachment sensor is built in the guiding
convex portion. The attachment sensor includes a limit switch and a substantially
L-shaped lever. The limit switch is mounted on a head holder and faces the inside
of the guiding convex portion through a front-side opening formed in the guiding convex
portion. On the other hand, the lever is provided in such a way as to be able to pivot
freely inside the guiding convex portion. The rear end portion of the lever protrudes
due to the urging force of the limit switch through the front-side opening formed
in the guiding convex portion.
[0003] When a tape cassette is attached into the cassette attachment portion, the guiding
concave portion of the tape cassette causes the lever to pivot so as to press the
limit switch. As a result, the limit switch turns on, and the completion of the attachment
of the tape cassette into the cassette attachment portion is detected.
Citation List
Patent Literature
[0004] Patent Literature 1: Japanese Unexamined Patent Application Publication No.
2014-14950
Summary of Invention
Technical Problem
[0005] The application of a print label creating apparatus of this kind is growing wider,
from office use to industrial use. Therefore, there is a trend of developing an apparatus
and a tape cassette (tape) having printing conditions (specification) suited for intended
use.
[0006] Amid the trend, although a print label creating apparatus according to prior art
described above is capable of detecting the attachment of a tape cassette, the apparatus
is not capable of detecting whether the detected tape cassette is in conformity with
a standard that matches with the specification of the apparatus or not. For this reason,
there is a possibility that predetermined print quality will not be obtained in a
case where a tape cassette that is in conformity with a standard that does not match
with the specification of the apparatus is attached.
[0007] An object of the present invention is to provide a tape printing apparatus that makes
it possible to discern, by attachment, whether a tape cartridge matches with the specification
of the apparatus or not, and to provide a tape printing system.
Solution to Problem
[0008] A tape printing apparatus according to the present invention is an apparatus to which
a tape cartridge is detachably attached, the tape cartridge including a core shaft
portion, a roll of printing tape being on an outer circumferential portion of the
core shaft portion, a core concave portion being formed as an inner circumferential
portion of the core shaft portion, the core concave portion including a recessed portion
and a to-be-identified portion, the to-be-identified portion being provided in the
recessed portion for identification of a cartridge type, the apparatus comprising:
a cartridge attachment portion into which the tape cartridge is attached; and a base
convex portion that is provided on the cartridge attachment portion, the core concave
portion coming into fit-in engagement with the base convex portion when the tape cartridge
is attached, the base convex portion including a pedestal portion with which the recessed
portion comes into fit-in engagement and including an identifying portion that is
provided on the pedestal portion, the to-be-identified portion coming into fit-in
engagement with the identifying portion.
[0009] In this structure, the attachment of the tape cartridge into the cartridge attachment
portion brings the to-be-identified portion of the core concave portion for identification
of a cartridge type into fit-in engagement with the identifying portion of the base
convex portion. Since the to-be-identified portion comes into fit-in engagement with
the identifying portion, it is possible to confirm that the tape cartridge matches
with the specification of the tape printing apparatus. On the other hand, in a case
where the to-be-identified portion does not come into fit-in engagement with the identifying
portion, the fitting failure makes it possible to confirm that the tape cartridge
does not match with the specification of the tape printing apparatus. That is, it
is possible to discern whether the tape cartridge matches with the specification of
the apparatus or not on the basis of whether the tape cartridge has been attached
properly into the cartridge attachment portion or not.
[0010] The to-be-identified portion is provided in the recessed portion, and the identifying
portion is provided on the pedestal portion, with which the recessed portion comes
into fit-in engagement; therefore, before the start of the fit-in engagement of the
to-be-identified portion with the identifying portion, the recessed portion collides
with the identifying portion, thereby correcting the orientation of the tape cartridge.
Therefore, providing the identifying portion of the base convex portion does not impair
smooth tape cartridge attachment.
[0011] In this case, preferably, the to-be-identified portion should include an identification
concave portion that is provided as a recess from the recessed portion; and the identifying
portion should include an identification convex portion that is provided as a protrusion
on the pedestal portion.
[0012] With this structure, it is possible to cause the base convex portion (identification
convex portion) to function also as a tape cartridge attachment guide and as a positioning
member.
[0013] In these cases, preferably, the identification concave portion should include a first
concave portion that extends in a radial direction; and the identification convex
portion should include a first convex portion with which the first concave portion
comes into fit-in engagement.
[0014] This makes it possible to make the structure of the first convex portion simple and
makes it possible to provide the first convex portion at an arbitrary position in
the circumferential direction of the identification convex portion. That is, it is
possible to identify the type of the cartridge with a simple structure.
[0015] Preferably, the to-be-identified portion should include a second convex portion that
is provided on the recessed portion and extends in a radial direction; and the identifying
portion should include a second concave portion that is provided in the pedestal portion
and with which the second convex portion comes into fit-in engagement.
[0016] This makes it possible to make the structure of the second concave portion simple
and makes it possible to provide the second concave portion at an arbitrary position
in the circumferential direction of the pedestal portion. That is, it is possible
to identify the type of the cartridge with a simple structure. Moreover, with the
cooperative functioning of the first convex portion and the second concave portion,
it is possible to increase the number of types of tape cartridge identified.
[0017] On the other hand, preferably, the to-be-identified portion should include an operating
portion; and the identifying portion should further include a detection portion with
which the operating portion comes into fit-in engagement when attached, and the detection
portion is operated by the operating portion to perform detection.
[0018] With this structure, it is possible to confirm that the tape cartridge matches with
the specification of the apparatus, and, at the same time, it is possible to detect
the attachment of the tape cartridge matching with the specification of the apparatus.
[0019] In this case, preferably, the to-be-identified portion should include an identification
concave portion that is provided as a recess from the recessed portion; the operating
portion should include a first operating portion that is provided in the identification
concave portion and extends in a radial direction; the identifying portion should
include an identification convex portion that is provided as a protrusion on the pedestal
portion; and the detection portion should include a first to-be-operated portion that
is provided on the identification convex portion for fit-in engagement with the first
operating portion and is operated by the first operating portion, and a first detection
portion body that is activated by the first to-be-operated portion for detection.
[0020] With this structure, since the detection portion includes the first to-be-operated
portion and the first detection portion body, it is possible to enhance the degree
of freedom in providing the first to-be-operated portion and the first detection portion
body without impairing the detection function. That is, it is possible to arrange
the first to-be-operated portion and the first detection portion with high space efficiency,
and it is possible to keep the compact size of the apparatus despite the fact that
the detection portion is provided.
[0021] In this case, preferably, the first to-be-operated portion should be provided in
such a way as to be able to slide freely in a direction of attachment and detachment
of the tape cartridge on an inner circumferential surface of the identification convex
portion.
[0022] With this structure, it is possible to utilize the inner circumferential surface
of the identification convex portion as an operation guide for the first to-be-operated
portion. In addition, it is possible to arrange the first to-be-operated portion with
high space efficiency.
[0023] Preferably, the operating portion should include a second operating portion that
is provided on the recessed portion and extends in a radial direction; and the detection
portion should include a second to-be-operated portion that is provided in the pedestal
portion for fit-in engagement with the second operating portion and is operated by
the second operating portion, and a second detection portion body that is activated
by the second to-be-operated portion for detection.
[0024] With this structure, since the detection portion includes the second to-be-operated
portion and the second detection portion body, it is possible to enhance the degree
of freedom in providing the second to-be-operated portion and the second detection
portion body without impairing the detection function. That is, it is possible to
arrange the second to-be-operated portion and the second detection portion with high
space efficiency, and it is possible to keep the compact size of the apparatus despite
the fact that the detection portion is provided. Moreover, with the cooperative functioning
of the first to-be-operated portion and the second to-be-operated portion, it is possible
to increase the number of types of tape cartridge identified; in addition, with the
cooperative functioning of the first detection portion body and the second detection
portion body, it is possible to detect these kinds of the tape cartridge reliably.
[0025] In this case, preferably, the second to-be-operated portion should be provided in
such a way as to be able to slide freely in a direction of attachment and detachment
of the tape cartridge on an inner circumferential surface of the pedestal portion.
[0026] With this structure, it is possible to utilize the inner circumferential surface
of the pedestal portion as an operation guide for the second to-be-operated portion.
In addition, it is possible to arrange the second to-be-operated portion with high
space efficiency.
[0027] A tape printing system according to the present invention comprises: the tape printing
apparatus described above; and the tape cartridge that is detachably attached into
the cartridge attachment portion.
[0028] With this structure, it is possible to discern whether the tape cartridge matches
with the specification of the apparatus or not. Therefore, it is possible to obtain
predetermined print quality.
Brief Description of Drawings
[0029]
[Fig. 1] An external perspective view of a tape printing apparatus (with a cover opened)
and a tape cartridge constituting a tape printing system according to an embodiment;
[Fig. 2] A plan view (a), a back view (b), a front elevation view (c), a rear elevation
view (d), a left elevation view (e), and a right elevation view (f) of a tape cartridge
according to an embodiment;
[Fig. 3] A top perspective view (a), and a back perspective view (b) of a tape cartridge
according to an embodiment;
[Fig. 4] A cross-sectional view (a) taken along the line A-A of Fig. 2(a), and a cross-sectional
view (b) taken along the line B-B thereof;
[Fig. 5] A plan view of a cartridge attachment portion;
[Fig. 6] A perspective view, from the back, of an open/close cover;
[Fig. 7] A plan view (a) of a tape cartridge with an upper case removed, and a back
view (b) of the upper case;
[Fig. 8] A perspective view (a) of a cartridge attachment portion, and an enlarged
perspective view (b) of a base convex portion;
[Fig. 9] An enlarged perspective view (a), from the back on the right, of a tape cartridge,
an enlarged perspective view (b), from the back on the left, of the tape cartridge,
and an enlarged plan view (c) of a core concave portion;
[Fig. 10] A cross-sectional view (a) of a state of non-attachment of a tape cartridge
into a cartridge attachment portion, and a cross-sectional view (b) of a state of
attachment thereof;
[Fig. 11] A cross-sectional view (a) of a state of non-attachment of a tape cartridge
into a cartridge attachment portion, and a cross-sectional view (b) of a state of
attachment thereof; (first variation example)
[Fig. 12] A cross-sectional view (a) of a state of non-attachment of a tape cartridge
into a cartridge attachment portion, and a cross-sectional view (b) of a state of
attachment thereof; (second variation example) Description of Embodiments
[0030] With reference to the accompanying drawings, a tape printing apparatus and a tape
printing system according to an embodiment of the present invention will now be explained.
The tape printing apparatus performs printing while unreeling a printing tape and
an ink ribbon from an attached tape cartridge, and cuts a printed part of the printing
tape off to create a label (tape strip). The tape printing system is made up of the
tape printing apparatus and a tape cartridge, which is attached for use to the tape
printing apparatus.
[Overview of Tape Printing Apparatus]
[0031] Fig. 1 is an external perspective view of a tape printing apparatus and a tape cartridge
attached thereto. As illustrated therein, a tape printing apparatus 1 includes an
apparatus case 3, of which the exterior of the tape printing apparatus 1 is made,
a cartridge attachment portion 5, into which a tape cartridge 100 is to be detachably
attached, and an open/close cover 7, which opens and closes for the cartridge attachment
portion 5. The cartridge attachment portion 5 is provided beneath the far side of
the top of the apparatus case 3, and a display 11 and a keyboard 13 are provided respectively
on the center and the near side thereof. There is a recessed portion 15, into which
a finger is to be inserted, near the open/close cover 7. To open the open/close cover
7, a finger is inserted into the recessed portion 15, and the finger-hooked cover
is pulled up. A vertically elongated tape exit 17, from which a printing tape 102
goes out, is provided in a side (left side) of the apparatus case 3.
[0032] The tape printing apparatus 1 further includes a printing mechanical portion 23,
which is provided upright in the cartridge attachment portion 5 and includes a print
head 21, a tape feeding mechanical portion 25, which is built in the cartridge attachment
portion 5, and a tape cutting mechanical portion 27, which is built near the tape
exit 17.
[0033] A user inputs print information via the keyboard 13, confirms the print information
on the display 11, and then instructs that printing be executed by performing key
operation. Upon the print instruction, the tape feeding mechanical portion 25 is driven,
thereby causing the printing tape 102 to travel together with an ink ribbon 110. Due
to heat applied to the ink ribbon 110 from the printing mechanical portion 23, ink
on the ink ribbon 110 transfers to the printing tape 102. Printing is performed in
this way. Because of the print feeding, the printing tape 102 goes out from the tape
exit 17 continuously, and, upon completion of the printing, the tape cutting mechanical
portion 27 is driven to cut the printed part of the printing tape 102 off.
[Overview of Tape Cartridge]
[0034] As illustrated in Figs. 2 and 7, the tape cartridge 100 includes a tape roll 106,
which is a roll of the printing tape 102 around a tape core 104, and a ribbon roll
114, which is a roll of the ink ribbon 110 around an unreeling core 112. The tape
cartridge 100 further includes a reeling core 116, which takes up the used ink ribbon
110, and a platen roller 120 (platen), which feeds the printing tape 102 and the ink
ribbon 110, wherein the print head 21 is configured to be brought into indirect contact
with the platen, with the ink ribbon 110 and the printing tape 102 therebetween. The
tape cartridge 100 further includes a cartridge case 130, in which the tape roll 106,
the ribbon roll 114, the reeling core 116, and the platen roller 120 are housed. As
described above, the tape cartridge 100 of the present embodiment has a so-called
shell structure, the enclosure of which is the cartridge case 130.
[0035] An insertion opening 134, into which the print head 21 is inserted at the time of
attachment of the tape cartridge 100 to the tape printing apparatus 1, is formed in
the cartridge case 130 thereof. The tape cartridge 100 has a tape feed outlet 138,
which is formed in the cartridge case 130 to feed out the printing tape 102. The tape
roll 106 is supported rotatably on a cylindrical core shaft portion 192, which protrudes
inside the cartridge case 130 (see Fig. 4). A detailed explanation thereof will be
given later.
[0036] When the platen roller 120 and the reeling core 116 are driven by the tape feeding
mechanical portion 25 described above, the printing tape 102 is unreeled from the
tape core 104, and the ink ribbon 110 is unreeled from the unreeling core 112. The
unreeled printing tape 102 and the unreeled ink ribbon 110 travel together at the
region of the platen roller 120 and are used for printing by the print head 21. The
unreeled end part of the printing tape 102 after the printing (the printed part) is
fed out from the tape feed outlet 138 toward the tape exit 17. On the other hand,
the ink ribbon 110 goes around the surrounding walls of the insertion opening 134
to be reeled onto the reeling core 116. Plural types of the tape cartridge 100 that
differ in thickness from one to another in accordance with a variety of widths of
the printing tape 102 are available.
[Details on Tape Printing Apparatus]
[0037] As illustrated in Figs. 1 and 5, the cartridge attachment portion 5 has a two-dimensional
shape that is complementary to the two-dimensional shape of the tape cartridge 100.
In addition, the cartridge attachment portion 5 is formed as a cavity that has a depth
corresponding to, among plural types of the tape cartridge 100 that are attachable,
the tape cartridge 100 of the greatest thickness. In this structure, an attachment
base 31, which is the bottom plate portion of the cartridge attachment portion 5,
is formed (molded) integrally with a sidewall portion 33 by means of resin or the
like. A slit-like tape ejection path 35 is formed between the cartridge attachment
portion 5 and the tape exit 17 described above. The tape cutting mechanical portion
27 described above is built in this region.
[0038] A base convex portion 40, which fits into the inner circumferential portion of the
core shaft portion 192 of the tape cartridge 100 (see Fig. 4) when the tape cartridge
100 is attached, is provided upright on the attachment base 31 of the cartridge attachment
portion 5. The base convex portion 40 includes a circular pedestal portion 41, which
is provided upright on the attachment base 31, and an identification convex portion
42, which is provided upright on the pedestal portion 41. A detailed explanation thereof
will be given later.
[0039] In addition, the print head 21, which is enclosed by a head cover 43, a platen drive
shaft 45, which causes the platen roller 120 to rotate, and a reeling drive shaft
47, which causes the reeling core 116 to rotate, are provided upright on the attachment
base 31. A tape detection portion 51, which detects the type (attribute information)
of the printing tape 102, and a core release portion 53, which releases the rotation
stopper of the unreeling core 112 and the reeling core 116, are provided on the attachment
base 31 at positions near the reeling drive shaft 47.
[0040] A pair of small protrusions 55 is provided on the attachment base 31 at diagonal
positions. In addition, a pair of latching pieces 57, which is configured to hook
onto the middle portion of the attached tape cartridge 100, is provided on the attachment
base 31. The tape feeding mechanical portion 25 described above, which includes a
motor and gear trains (both omitted in the illustration) for causing the platen drive
shaft 45 and the reeling drive shaft 47 to rotate, is built in a space under the back
of the attachment base 31. The tape feeding mechanical portion 25 branches motive
power out by means of the gear trains, thereby causing the platen drive shaft 45 and
the reeling drive shaft 47 to rotate in synchronization with each other.
[0041] The printing mechanical portion 23 includes the print head 21, which is a thermal
head, and a head supporting frame 61, by which the print head 21 is supported and
via which the print head 21 is caused to turn. The printing mechanical portion 23
further includes a head release mechanism (not illustrated), which causes the print
head 21 to turn via the head supporting frame 61 between a printing position and a
retracted position, and the head cover 43, by which the print head 21 (and the head
supporting frame 61) is enclosed.
[0042] The head release mechanism operates in linkage with the opening and closing of the
open/close cover 7 described above. Specifically, the head release mechanism moves
(turns) the print head 21 to the printing position in linkage with the closing of
the open/close cover 7. The head release mechanism moves (turns) the print head 21
to the retracted position in linkage with the opening of the open/close cover 7. The
print head 21 having been moved to the printing position is in indirect contact with
the platen roller 120, with the ink ribbon 110 and the printing tape 102 therebetween.
The print head 21 having been moved to the retracted position is away from the platen
roller 120. This prevents the printing tape 102 and the ink ribbon 110 from colliding
with the print head 21 at the time of attachment or detachment of the tape cartridge
100.
[0043] The print head 21 includes a plurality of heat generation elements. The plural heat
generation elements are arranged in a line in the same direction as the direction
of the shaft of the platen roller 120. Printing is performed as a result of the feeding
of the printing tape 102 and the ink ribbon 110 and the selective driving of the plural
heat generation elements. The head cover 43 has a substantially rectangular shape
in plan view, and is formed (molded) integrally with the attachment base 31 (cartridge
attachment portion 5) described above. The head cover 43 protrudes perpendicularly
from the attachment base 31, and tolerates the turning of the print head 21 inside.
[0044] The tape detection portion 51 is made up of a plurality of micro switches 51a. They
are configured to be selectively engaged with the to-be-detected portion 180 of the
tape cartridge 100 described later, thereby detecting the type of the printing tape
102 such as tape width, tape color, and material, etc. The driving of the print head
21 and the tape feeding mechanical portion 25 is controlled on the basis of the results
of the detection.
[0045] The core release portion 53 is made up of two release pins 53a, one for the unreeling
core 112 and the other for the reeling core 116. Rotation stopper hooks 206, which
are latched onto the unreeling core 112 and the reeling core 116 respectively as will
be described in detail later, are provided in the cartridge case 130 (see Fig. 6).
The release pins 53a become engaged with the rotation stopper hooks 206 when the tape
cartridge 100 is attached. The pin engagement releases the rotation stopper of the
unreeling core 112 and the reeling core 116.
[0046] The platen drive shaft 45 includes a fixed support shaft 45a, which is provided through
the platen roller 120, and a spline drive shaft 45b, which has a spline shape and
is rotatably supported on the base portion of the fixed support shaft 48 (see Fig.
5). The rotational power of the tape feeding mechanical portion 25 is transmitted
to the spline drive shaft 45b and is thereafter transmitted from the spline drive
shaft 45b to the platen roller 120 (a detailed explanation thereof will be given later).
[0047] Similarly, the reeling drive shaft 47 includes a fixed shaft 47a and a movable shaft
47b. The movable shaft 47b has a spline shape and is rotatably supported on the fixed
shaft 47a. The rotational power of the tape feeding mechanical portion 25 is, also
in this case, transmitted to the movable shaft 47b and is thereafter transmitted from
the movable shaft 47b to the reeling core 116.
[0048] The attachment of the tape cartridge 100 into the cartridge attachment portion 5
brings the core shaft portion 192 (core concave portion 260 described later) into
engagement with the base convex portion 40 (see Fig. 10), brings the platen roller
120 into engagement with the platen drive shaft 45, and brings the reeling core 116
into engagement with the reeling drive shaft 47. Then, the closing of the open/close
cover 7 turns the print head 21 and brings the print head 21 into contact with the
platen roller 120, with the printing tape 102 and the ink ribbon 110 nipped therebetween,
thereby putting the tape printing apparatus 1 into a print standby state.
[0049] As illustrated in Figs. 1, 5, and 6, the open/close cover 7 is attached rotatably
to the apparatus case 3 via a hinge portion 71 provided at the far end, that is, attached
thereto in such a way as to be able to open and close freely. The open/close cover
7 includes an open/close cover body 73 and a see-through window 75, which is provided
at the center of the open/close cover body 73. The open/close cover 7 includes a pair
of bearing pieces 77, which protrudes from the back of the open/close cover body 73
and is rotatably supported at the hinge portion 71, and an actuating lever 79, which
protrudes from the back of the open/close cover body 73 and is configured to cause
the print head 21 to turn. The open/close cover 7 further includes two pushing protrusions
81, which protrude from the back of the open/close cover body 73 and are configured
to push the tape cartridge 100, and a pressing-down protrusion 83, which protrudes
from the back of the open/close cover body 73 and is configured to activate (ON) a
built-in closing-of-the-cover detection switch (not illustrated).
[0050] The see-through window 75 is horizontally elongated, and is made of transparent resin
(transmissive to visible light) distinct from the open/close cover body 73. It is
possible to visually confirm the tape cartridge 100 (the type of the printing tape
102, the amount of the tape left) having been attached into the cartridge attachment
portion 5 through the see-through window 75. The pair of bearing pieces 77, the actuating
lever 79, the two pushing protrusions 81, the pressing-down protrusion 83, and the
open/close cover body 73 are formed (molded) of resin integrally.
[0051] The actuating lever 79 protrudes as a large protruding piece from the back of the
open/close cover body 73, and is configured to be inserted into a slit opening 87,
which is provided alongside the cartridge attachment portion 5, when the open/close
cover 7 is closed. The actuating lever 79 having been inserted into the slit opening
87 actuates the head release mechanism described above, thereby causing the print
head 21 to turn toward the platen roller 120. Similarly, the pressing-down protrusion
83 is configured to be inserted into a rectangular opening 91, which is provided adjacent
to the slit opening 87, when the open/close cover 7 is closed, thereby turning the
closing-of-the-cover detection switch ON.
[0052] One of the two pushing protrusions 81 is provided at a position corresponding to
a position near the platen roller 120 of the tape cartridge 100. The other pushing
protrusion 81 is provided at a position corresponding to a position just above the
tape detection portion 51 described above. When the open/close cover 7 is closed,
the two pushing protrusions 81 push the tape cartridge 100 so that the tape cartridge
100 becomes seated on the attachment base 31 of the cartridge attachment portion 5,
and prevent the tape cartridge 100 from getting out of the seat upward.
[Details on Tape Cartridge]
[0053] Next, with reference to Figs. 2 to 4, and 7, the tape cartridge 100 will now be explained
in detail. In the explanation of the tape cartridge 100, Fig. 1 is taken as an example,
and the faces of the tape cartridge 100 are named as follows: the near face in the
attachment direction corresponding to the top of the tape cartridge 100 is called
as "front"; the far face that is the opposite face in the attachment direction is
called as "back"; the left side face is called as "left side"; the right side face
is called as "right side"; the upper rounded side face is called as "distal end";
and the lower side face is called as "proximal end".
[0054] As described above, the tape cartridge 100 includes the cartridge case 130, and further
includes the tape roll 106, the ribbon roll 114, the reeling core 116, and the platen
roller 120, which are housed therein (see Fig. 7). In addition, the tape cartridge
100 has the insertion opening 134, which is formed in the cartridge case 130, the
tape feed outlet 138, which is formed in the left side near the platen roller 120,
and an identification sticker 141 (see Fig. 1), which is bonded, to the region where
the tape roll 106 is housed, from the left side to the right side across the front.
At two places, specifically, on the front and the left side, the identification sticker
141 shows information on the width, color, and material, etc. of the printing tape
102 that is housed therein.
[0055] The cartridge case 130 is the exterior of the tape cartridge 100 (shell structure),
and has a shape that looks like a letter "L" in plan view, meaning that the proximal-end
portion of the right side is bulged to some extent. In the front-back direction, the
cartridge case 130 includes a lower case 150, which is the farther counterpart when
attached into the cartridge attachment portion 5, and an upper case 152, which is
the nearer counterpart when attached into the cartridge attachment portion 5. In the
cartridge case 130 of the present embodiment, the upper case 152 is a molded part
that is made of transparent resin, and the lower case 150 is a molded part that is
made of opaque resin.
[0056] To constitute the upper case 152, a top wall portion 156, which corresponds to the
front of the cartridge case 130, and an upper peripheral wall portion 158, which is
a portion hanging from the periphery of the top wall portion 156, are formed (molded)
integrally. To constitute the lower case 150, a bottom wall portion 160, which corresponds
to the back of the cartridge case 130, a lower peripheral wall portion 162, which
is a portion rising from the periphery of the bottom wall portion 160, and an around-opening
surrounding wall portion 164, which is a portion rising from the bottom wall portion
160 so as to enclose the insertion opening 134 described above, are formed (molded)
integrally.
[0057] Plural joint pins 170 are provided at arbitrary intervals on the bottom edge of the
upper peripheral wall portion 158 of the upper case 152, and plural joint holes 172
corresponding to the plural joint pins 170 are provided in the lower peripheral wall
portion 162 of the lower case 150 (see Fig. 7). After the setting of constituent parts
such as the tape roll 106 and the ribbon roll 114, etc. into the lower case 150, the
upper case 152 and the lower case 150 are joined together in such a way as to press-fit
the plural joint pins 170 into the plural joint holes 172. The tape cartridge 100
is assembled in this way. Each of the joint holes 172 is formed as a through hole
in consideration of easier molding.
[0058] A pair of latch receptacles 174, onto which the pair of latching pieces 57 described
above is configured to hook, is provided on the left side and the right side of the
lower case 150 (see Figs. 2(e), (f), and 3(b)). The latching engagement of the pair
of latching pieces 57 of the cartridge attachment portion 5 with the pair of latch
receptacles 174 of the attached tape cartridge 100 prevents the tape cartridge 100
from getting out of the seat upward. Small engagement holes 176, into which the pair
of small protrusions 55 described above is to be inserted with a slight margin, are
formed in the back of the lower case 150 (see Fig. 3(b)). The inserting engagement
of the pair of small protrusions 55 of the cartridge attachment portion 5 with the
pair of small engagement holes 176 of the attached tape cartridge 100 serves for simple
positioning of the tape cartridge 100 on the attachment base 31.
[0059] The to-be-detected portion 180, which corresponds to the tape detection portion 51
described above, is provided on the back of the lower case 150 at the proximal-end-side
left corner (right corner as viewed from the front) (see Fig. 3(b)). The to-be-detected
portion 180 is a portion having a structure corresponding to the plural micro switches
51a of the tape detection portion 51, and a plurality of bit patterns is able to be
obtained on the basis of the presence or absence of counterpart holes 180a provided
at this region. That is, the bit pattern corresponds to the type of the printing tape
102 described above.
[0060] As illustrated in Figs. 4 and 7, the upper-side space (at the distal-end side) inside
the cartridge case 130 is a wide tape housing area 190 where the tape roll 106 is
housed. The core shaft portion 192, which is formed (molded) integrally with the lower
case 150, is provided upright at the center of the tape housing area 190. The core
shaft portion 192 has a tiered cylindrical shape. The tape roll 106 (tape core 104)
is supported rotatably on the outer circumferential surface 192b of the core shaft
portion 192 (see Fig. 4).
[0061] As will be described in detail later, the core shaft portion 192 having a tiered
cylindrical shape has the core concave portion 260 as its inner circumferential portion,
and the base convex portion 40 described above is to fit into the core concave portion
260. The core concave portion 260 includes a recessed portion 262, into which the
pedestal portion 41 of the base convex portion 40 is to fit, and an identification
concave portion 264, into which the identification convex portion 42 of the base convex
portion 40 is to fit. In addition, a reverse rotation stopper spring 193, which is
a coil spring for preventing the reverse rotation of the tape roll 106, is built in
at the upper region of the core concave portion 260.
[0062] As illustrated in Fig. 7, a tape guide 194 for guiding the unreeled printing tape
102 to the platen roller 120 is provided upright integrally with the lower case 150
in the tape housing area 190 at a position near the platen roller 120. That is, a
tape feeding path 196, which leads from the tape roll 106 to the tape feed outlet
138 via the tape guide 194 and the platen roller 120, is provided inside the cartridge
case 130. The printing tape 102 having been unreeled from the tape roll 106 is guided
through the tape guide 194 to the platen roller 120, is used for printing at the platen
roller 120, and is further guided from the platen roller 120 to the tape feed outlet
138.
[0063] The tape roll 106 includes the printing tape 102 and the tape core 104. The tape
roll 106 further includes two circular films 198, which are bonded respectively to
the two edge faces of the roll-shaped printing tape 102. The two circular films 198
prevent the printing tape 102 wrapped around the tape core 104 from coming apart.
[0064] As illustrated in Figs. 4 and 7, the tape core 104 includes a reel portion 104a,
around which the printing tape 102 is wrapped, and a rotation contact portion 104c,
which is provided inside the reel portion 104a, with a plurality of inward ribs 104b
provided therebetween. The rotation contact portion 104c is supported rotatably on
the core shaft portion 192 described above. A plurality of radiating edge face grooves
104d is formed on an edge face of the rotation contact portion 104c, and the reverse
rotation stopper spring 193 described above is configured to be engaged with, and
be disengaged from, the edge face groove 104d. Specifically, a vertical slit 192a
extending in the shaft direction is formed in the upper region of the core shaft portion
192, and the end of the wire member of the reverse rotation stopper spring 193 protrudes
from the vertical slit 192a to be engaged with the edge face groove 104d of the rotation
contact portion 104c.
[0065] When the tape cartridge 100 is carried around, the reverse rotation stopper spring
193 prevents the reverse rotation of the tape roll 106 (printing tape 102). When the
tape cartridge 100 is attached into the cartridge attachment portion 5, the reverse
rotation stopper spring 193 is compressed by the base convex portion 40 described
above, and the end of the wire member of the reverse rotation stopper spring 193 is
disengaged from the edge face groove 104d of the rotation contact portion 104c to
release the reverse rotation stopper (see Fig. 10 for both). This release makes it
possible to feed the printing tape 102.
[0066] As illustrated in Fig. 7, a ribbon housing area 200 is formed adjacent to the insertion
opening 134 at the proximal-end right-side region inside the cartridge case 130. An
unreeling-side bearing portion 202, which supports the ribbon roll 114 (unreeling
core 112) rotatably, is formed integrally with the cartridge case 130 at a relatively
right-side region of the ribbon housing area 200, and a reeling-side bearing portion
204, which supports the reeling core 116 rotatably, is formed integrally with the
cartridge case 130 at a relatively left-side region of the ribbon housing area 200.
That is, the unreeling-side bearing portion 202 and the reeling-side bearing portion
204 are formed in each of the upper case 152 and the lower case 150.
[0067] The rotation stopper hooks 206, the ends of which face the unreeling-side bearing
portion 202 and the reeling-side bearing portion 204 respectively, are provided at
the respective cutout regions of the unreeling-side bearing portion 202 and the reeling-side
bearing portion 204 formed in the lower case 150. One of the two rotation stopper
hooks 206 is in engagement with the unreeling core 112 in a rotation stopping state.
The other rotation stopper hook 206 is in engagement with the reeling core 116 in
a rotation stopping state.
[0068] A first ribbon guide 210 for guiding the unreeled ink ribbon 110 to the platen roller
120 is provided upright integrally with the lower case 150 in the ribbon housing area
200 at a position near the unreeling-side bearing portion 202. In addition, a plurality
of second ribbon guides 212 is formed integrally outside the around-opening surrounding
wall portion 164 described above, wherein these guides guide the ink ribbon 110 when
ink ribbon 110 goes around it.
[0069] That is, a ribbon feeding path 214, which leads from the ribbon roll 114 to the reeling
core 116 via the first ribbon guide 210, the platen roller 120, and the plurality
of second ribbon guides 212, is provided inside the cartridge case 130. The ink ribbon
110 having been unreeled from the ribbon roll 114 is guided through the first ribbon
guide 210 to the platen roller 120, is used for printing at the platen roller 120,
is further guided from the platen roller 120 to go around the around-opening surrounding
wall portion 164 (through the plurality of second ribbon guides 212), and is finally
reeled onto the reeling core 116.
[0070] The ribbon roll 114 includes the ink ribbon 110 and the unreeling core 112. The ribbon
roll 114 further includes a ring-shaped leaf spring 220 for applying a braking load
to the unreeling core 112 (see Fig. 7(b)). The leaf spring 220 has a wave pattern
in the circumferential direction. In the shaft direction, the leaf spring 220 is provided
between the top wall portion 156 of the upper case 152 and the unreeling core 112.
That is, due to the resilience of the leaf spring 220, a rotation braking load is
applied to the unreeling core 112. Therefore, the ink ribbon 110 unreeled by being
taken up by the reeling core 116 is back-tensioned so as to prevent its slackening.
[0071] The unreeling core 112 has a cylindrical shape. A plurality of notches 222 is formed
in the circumferential direction at the lower-case-side 150 end of the unreeling core
112 (see Fig. 3(b)). The rotation stopper hook 206 described above is engaged with,
and disengaged from, the notch 222. The unreeling-side bearing portion 202 of the
lower case 150 for supporting the unreeling core 112 is a circular opening. The unreeling-side
bearing portion 202 of the upper case 152 is a cylindrical protruding portion. The
leaf spring 220 described above is mounted on the protruding portion (see Fig. 7(b)
for both).
[0072] Similarly, the reeling core 116 has a cylindrical shape, and a plurality of notches
224 is formed in the circumferential direction at the lower-case-side 150 end of the
reeling core 116 (see Fig. 3(b)). The rotation stopper hook 206 described above is
engaged with, and disengaged from, the notch 224. Spline slit grooves 226 are formed
in the inner circumferential surface of the reeling core 116, and these slit grooves
are in spline engagement with the reeling drive shaft 47 described above. Because
of this structure, the rotation force of the reeling drive shaft 47 is transmitted
to the reeling core 116 so as to take up the ink ribbon 110.
[0073] A platen housing area 230 is formed adjacent to the insertion opening 134 at the
proximal-side left-side region inside the cartridge case 130. A lower bearing portion
234, which is an elliptical opening formed in the lower case 150 (see Fig. 3(b)),
and an upper bearing portion 232, which is an elliptical opening formed in the upper
case 152 (see Fig. 7(b)), are formed at the center of the platen housing area 230.
The platen roller 120 is supported by the upper bearing portion 232 and the lower
bearing portion 234 in such a way as to be able to rotate freely and in such a way
as to be able to slightly move laterally. That is, the platen roller 120 supported
by the elliptical upper bearing portion 232 and the elliptical lower bearing portion
234 is configured to be able to move laterally (very small movement) between a home
position of being in engagement with the platen drive shaft 45 and a nipping position
of being in contact with the tape guide 194, with the printing tape 102 nipped.
[0074] The tape cartridge 100 is carried around in a state in which the unreeled end part
of the printing tape 102 protrudes slightly to the outside through the tape feed outlet
138 (see Fig. 1). When it is carried around, if a pushing force or a pulling force
acts on the unreeled end part of the printing tape 102 by mistake, the platen roller
120 drawn by the force moves to the nipping position described above. This movement
prevents the unreeled end part of the printing tape 102 from being drawn into the
cartridge case 130 through the tape feed outlet 138.
[0075] The platen roller 120 includes a cylindrical roller base 240 and a rubber roller
242, which is mounted on the outer circumferential surface of the roller base 240
(see Fig. 7(a)). The rubber roller 242 has a length corresponding to that of the print
head 21 in the shaft direction. The print head 21 having been moved to the printing
position is in contact with the rubber roller 242, with the printing tape 102 and
the ink ribbon 110 nipped therebetween.
[0076] The spline drive shaft 45b of the platen drive shaft 45 is in spline engagement with
the base portion of the roller base 240. Because of this engagement, the rotation
force of the platen drive shaft 45 is transmitted to the platen roller 120, and the
printing tape 102 (and the ink ribbon 110) is fed for printing.
[First Embodiment]
[0077] Next, with reference to Figs. 8 to 10, the base convex portion 40 and the core concave
portion 260 will now be explained in detail (first embodiment). The base convex portion
40 is provided on the cartridge attachment portion 5. The core concave portion 260
corresponding to the base convex portion 40 is provided in the tape cartridge 100.
[0078] As illustrated in Figs. 8 and 10, the base convex portion 40 includes the pedestal
portion 41, which is provided upright on the attachment base 31, and the identification
convex portion 42, which is provided upright on the pedestal portion 41. The pedestal
portion 41 and the identification convex portion 42 are formed integrally with each
other. The pedestal portion 41 has a circular shape, and includes a cutout opening
portion 280 (second concave portion) in its part in the circumferential direction.
The identification convex portion 42 includes a columnar (hollow) convex portion body
282, four ridges 284, which are formed on the outer circumferential surface of the
convex portion body 282 in a cross layout, and a tongue piece 286 (first convex portion),
which protrudes in the radial direction along the top of the pedestal portion 41 from
the convex portion body 282.
[0079] On the other hand, as illustrated in Figs. 9 and 10, the core concave portion 260
includes the recessed portion 262, into which the pedestal portion 41 of the base
convex portion 40 is to fit, and the identification concave portion 264, into which
the identification convex portion 42 thereof is to fit. The recessed portion 262 and
the identification concave portion 264 constitute a continuous space. A fit-in convex
portion 290 (second convex portion), which corresponds to the cutout opening portion
280, is formed in the identification concave portion 264 in such a way as to protrude
toward the space in the shaft direction and in the radial direction. A fit-in concave
portion 292 (first concave portion), which corresponds to the tongue piece 286 of
the identification convex portion 42, is formed in the identification concave portion
264 in such a way as to be recessed in the space in the shaft direction and in the
radial direction.
[0080] When the tape cartridge 100 is attached into the cartridge attachment portion 5,
the pedestal portion 41 of the base convex portion 40 fits into the recessed portion
262 of the core concave portion 260, and, at the same time, the identification convex
portion 42 of the base convex portion 40 fits into the identification concave portion
264 of the core concave portion 260 (see Fig. 10). In addition, in accordance with
this fit-in engagement, the fit-in convex portion 290 fits into the cutout opening
portion 280, and the tongue piece 286 fits into the fit-in concave portion 292.
[0081] In the tape cartridge 100 of the present embodiment, the tape roll 106 is heavier
than other constituent parts, and the center of gravity lies in the neighborhood of
the tape core 104 in plan view. For this reason, when the tape cartridge 100 is held
with a hand for attachment, the tape cartridge 100 tends to be inclined toward its
tape core 104 with its distal-end side down, unless the user is particularly conscious.
In such a case, before the fit-in engagement of the identification convex portion
42 with the identification concave portion 264, the recessed portion 262 often collides
with the identification convex portion 42, and the inclined orientation of the tape
cartridge 100 is corrected because of this collision. That is, in the process of attachment,
the tape cartridge 100 is corrected into level orientation. Therefore, it is possible
to perform attachment smoothly.
[0082] In the present embodiment, the cooperative functioning of the core concave portion
260 and the base convex portion 40 makes it possible to identify the type of the cartridge.
The cartridge type in this case does not mean the type of the printing tape 102 (the
tape type is detected by the tape detection portion 51); for example, application
(for industrial use or for home use), intended territory of destination (for U.S.
or for Europe), or the like is identified. On the other hand, with regard to the tape
printing apparatus 1, plural models varying in printing conditions (specification)
from one application to another and from one destined territory to another are available.
[0083] Though not illustrated, plural types of the tape cartridge 100 for different destined
territories (applications) with differences in the position of the fit-in concave
portion 292 in the core concave portion 260 in the circumferential direction, for
example, with an angular shift in pitch of 90° (phase shift), are available. To correspond
to this variation, plural types of the tape printing apparatus 1 for different destined
territories (applications) with a shift in the phase of the tongue piece 286 in the
base convex portion 40 are available (first identification pattern).
[0084] Moreover, in order to increase the number of cartridge types, there is an additional
pattern with a shift in the phase of the fit-in convex portion 290 in the core concave
portion 260 (a pattern with a shift in the phase of the cutout opening portion 280
in the base convex portion 40) (second identification pattern). In place of the phase
shift (the first identification pattern and/or the second identification pattern)
or in addition to the phase shift, the shape of the fit-in concave portion 292 (tongue
piece 286) and/or the shape of the fit-in convex portion 290 (cutout opening portion
280) may be modified.
[0085] As described above, in the first embodiment, the attachment of the tape cartridge
100 into the cartridge attachment portion 5 brings the fit-in convex portion 290 and
the fit-in concave portion 292 provided on/in the core concave portion 260 into fit-in
engagement with the cutout opening portion 280 and the tongue piece 286 provided in/on
the base convex portion 40. By this means, it is possible to confirm that the tape
cartridge 100 matches with the specification of the tape printing apparatus 1 (specified
for application, for destined territory). Therefore, it is possible to discern whether
the tape cartridge 100 matches with the specification of the tape printing apparatus
1 or not on the basis of whether the tape cartridge 100 has been attached properly
into the cartridge attachment portion 5 or not. Therefore, printing is performed under
proper printing conditions, resulting in predetermined print quality.
[0086] Moreover, smooth attachment of the tape cartridge 100 is not impaired because the
fit-in convex portion 290 and the fit-in concave portion 292 are provided on/in the
recessed portion 262 and because the cutout opening portion 280 and the tongue piece
286 are provided in/on the pedestal portion 41.
[Second Embodiment]
[0087] Next, with reference to Fig. 11, a second embodiment regarding the neighborhood of
the base convex portion 40 will now be explained. As illustrated therein, in the second
embodiment, a cartridge detection portion 300 (detection portion) is built inside
the base convex portion 40. The cartridge detection portion 300 detects the attachment
of a proper tape cartridge 100 in the cartridge type described above by being operated
by an operating portion that is the fit-in convex portion 290 (second operating portion)
of the core concave portion 260 described above. Therefore, the fit-in convex portion
290 according to the second embodiment functions also as a to-be-detected portion
at the tape-cartridge side 100.
[0088] The cartridge detection portion 300 is built inside the pedestal portion 41 of the
base convex portion 40. The cartridge detection portion 300 includes a to-be-operated
member 302 (second to-be-operated portion), which moves downward by being operated
by the fit-in convex portion 290, which is the operating portion, and a switch body
304 (second detection portion body), which is in contact with the to-be-operated member
302 from below. The switch body 304 is a micro switch, etc. that is provided in a
fixed manner. The to-be-operated member 302 has a shape like a cap, and is provided
in such a way as to be able to move up and down freely (slide freely) on the inner
circumferential surface of the pedestal portion 41. In this case, the to-be-operated
member 302 has moved to an upward movement end position by being urged by the built-in
spring of the switch body 304.
[0089] The attachment of the tape cartridge 100 into the cartridge attachment portion 5
brings the fit-in convex portion 290 of the core concave portion 260 into fit-in engagement
with the cutout opening portion 280 of the base convex portion 40, brings the fit-in
convex portion 290 of the core concave portion 260 into contact with the to-be-operated
member 302, and causes the to-be-operated member 302 to move down toward the cartridge
attachment portion 5. The downward movement of the to-be-operated member 302 activates
(ON) the switch body 304. As a result, the attachment of the tape cartridge 100 is
detected.
[0090] As described above, according to the second embodiment, by providing the cartridge
detection portion 300 inside the base convex portion 40, it is possible to detect
the proper attachment of the tape cartridge 100 prepared on a destination-by-destination
(application-by-application) basis. Moreover, even if the position and/or shape of
the cutout opening portion 280 is changed for cartridge identification, it is not
necessary to apply any change to the cartridge detection portion 300 because the cartridge
detection portion 300 has a structure of activating the switch body 304 via the to-be-operated
member 302 and because the to-be-operated member 302 has a shape like a cap.
[0091] In a case where there exists (use at) a cold-climate area in the variety of destined
territories (applications) of the tape cartridge 100, operation of, for example, switching
the tape printing apparatus 1 to a cold-climate area mode may be performed on the
basis of the detection result of the cartridge detection portion 300.
[Third Embodiment]
[0092] Next, with reference to Fig. 12, a third embodiment regarding the neighborhood of
the base convex portion 40 will now be explained. As illustrated therein, in the third
embodiment, the cartridge detection portion 300 built inside the base convex portion
40 has a structure in which a to-be-operated member 302A (first to-be-operated portion)
doubles as the tongue piece 286. Therefore, in the third embodiment, of the core concave
portion 260, the fit-in concave portion 292 (first operating portion) corresponding
to the tongue piece 286 functions as a to-be-detected portion at the tape-cartridge
side 100. Also in this case, a switch body 304A (first detection portion body) is
in contact with the to-be-operated member 302A from below (from the cartridge-attachment-portion
side 5). The to-be-operated member 302A is urged by the built-in spring of the switch
body 304A upward (in the direction away from the cartridge attachment portion 5).
[0093] In the cartridge detection portion 300, the to-be-operated member 302A includes a
shaft-like portion 310 and a tongue-like portion 312, which doubles as the tongue
piece 286. The shaft-like portion 310 and the tongue-like portion 312 are formed integrally
with each other. The shaft-like portion 310 is provided in such a way as to be able
to move up and down freely on the inner circumferential surface of the convex portion
body 282 of the base convex portion 40 (slide freely in the direction in which the
tape cartridge 100 is attached into, and detached from, the cartridge attachment portion
5). The tongue-like portion 312 is provided in such a way as to be able to move up
and down freely on an L-shaped slit portion 316, which is provided from a side of
the convex portion body 282 to the top of the pedestal portion 41. In this case, in
consideration of an operation stroke, the initial position of the tongue-like portion
312 is set to be slightly higher than the position of the tongue piece 286 described
above.
[0094] The attachment of the tape cartridge 100 into the cartridge attachment portion 5
brings (the top face of) the fit-in concave portion 292 of the core concave portion
260 into fit-in engagement with the tongue-like portion 312 of the to-be-operated
member 302A and into contact therewith, and causes the to-be-operated member 302A
to move down toward the cartridge attachment portion 5. The downward movement of the
to-be-operated member 302A activates (ON) the switch body 304A. As a result, the attachment
of the tape cartridge 100 is detected.
[0095] As described above, according to the third embodiment, by providing the cartridge
detection portion 300 inside the base convex portion 40, it is possible to detect
the proper attachment of the tape cartridge 100 prepared on a destination-by-destination
(application-by-application) basis. Moreover, because of a structure in which the
to-be-operated member 302A doubles as the tongue piece 286, it is possible to reduce
the number of parts.
[0096] Both of the cartridge detection portion 300 of the second embodiment and the cartridge
detection portion 300 of the third embodiment may be built integrally inside the base
convex portion 40 (fourth embodiment), although illustration is omitted. In such a
case, it is possible to increase the number of types of the tape cartridge 100, and
it is possible to detect these kinds of the tape cartridge 100 reliably. Though the
switch body 304 is a micro switch in the present embodiment, the switch body 304 is
not limited thereto. The switch body 304 may be an optical sensor or the like. Reference
Signs List
[0097]
- 1
- tape printing apparatus
- 3
- apparatus case
- 5
- cartridge attachment portion
- 7
- open/close cover
- 21
- print head
- 23
- printing mechanical portion
- 25
- tape feeding mechanical portion
- 31
- attachment base
- 40
- base convex portion
- 41
- pedestal portion
- 42
- identification convex portion
- 45
- platen drive shaft
- 100
- tape cartridge
- 102
- printing tape
- 104
- tape core
- 106
- tape roll
- 110
- ink ribbon
- 120
- platen roller
- 130
- cartridge case
- 150
- lower case
- 152
- upper case
- 192
- core shaft portion
- 260
- core concave portion
- 262
- recessed portion
- 264
- identification concave portion
- 280
- cutout opening portion
- 282
- convex portion body
- 286
- tongue piece
- 290
- fit-in convex portion
- 292
- fit-in concave portion
- 300
- cartridge detection portion
- 302, 302A
- to-be-operated member
- 304, 304A
- switch body
- 310
- shaft-like portion
- 312
- tongue-like portion